Vault



designed to effect burning, e

Patented Nov. 2, 1926.

UNITED s'raTEs PATENT oFFicE.

ANTHONY KENNEDY, oF DEEXEL HILL, PENNSYLVANIA, AssIGNoR or ONE-HALE To THE HOLLAR COMPANY, E PHILADELPHIA, PENNSYLVANIA, A CORPORATION or N EW YORK.

VAULT.

It is an object of my invention to provide a construction and arrangement of thal Walls for a safe or vault inclosure such as to be highly resistant to felonious attack by means fusion or other disintegration thereof by at. Such means of attack include Oxy-acetylene flames and electric arcs.

My invention -relates to the inclusion' in a vault Wall or door of a plate of metal having such a high melting point that it is impossible to successfully feloniously penetrate it by such heatin meansas aforesaid. As hereinafter describe ,an essential feature of my invention is the inclusion `of such refractory metallic elements in lates or slabs of cast'metal, preferablystee and conveniently by formingthe refractory plate with openings therethrough in'spaccd relation to each ot'lier and causing the cast metal to fiow through said openings and upon opposite sides of such foram'inous plates.

Moreover, as hereinaftervdescribed, I refer to further obstruct'the line of attac at the region of such openings in the refractor? inctalnby auxiliariy7 protecting means whici may include anot er such refractory metal plate with openings therethrough in stag er ed relation to tlieopenings in the first p ate aforesaid, or may consist of auxiliar p ates in substantial-regist with the in ividual openings through sai first plate. In either case, the refractory plates and the means for obstructing the openings therethrough may be rigidl connected, by bolts, or ot erwise, before tie molten cast metal is applied thereto.

Such construction is advantageous in that the cast metal is permanently connected with theV refractoiA metal even if the latter has such a high usion `pointtliat4 the cast metal does not unite therewith at the contiguous surfaces of the two metals. Such constructionlias thefurther advantage that the completed slab, thus composed of a foraminous refractory plate thus imbedded in castl metal, a pears to be formed-entirely of. the latter; tliiere being no. indicationu on the exterior of such a slab that it is o such composite character.

My invention includes the various novel features of construction and arrangement hereinafter more definitely specified.

In said drawings: -Fi I is. a perspective view of a rectangular 4sla designed to'form second part of a-vault inclosure wall and including a single foraminous refractory plate imbedded in cast metal. u

Fig. II isa fragmentary sectional View of a plate similar to Fig. I, except that it includes a .plurality of refractory plates with their openings in staggered relation.

FimIIIis a fragmentary horizontal sectionarl` view of a vault ,door and adjacent Wall members embodying my improvement.

Fig. IV is a ,fragmentary radialsectional view ofacircular door slab embodying a modified form of my invention.

Referring to4 Fig. I; the vault wall memberl .1 comprisesl imbedded therein a.plate of more refractory metal 3; saidI late 3 being rendered foraminous by. a-l p urality of openings 4 therethrough and the cast metal extending through said lopenings in unitary relation with the cast metal upon opposite sides of said late.

Re erring to Fig. II; the vault wall mem* ber 5 com rises a slab of cast' steel 6, having imbed ed therein a plate of more refractory metal.3; saidl late 3 being rendered foraminous by a plurality of openings 4 therethrough and t e cast metal extending through said openings'in unitary relation with the cast metal upon op osite sides of said plate. However, said s ab 5 includes another;plate, of vrefractory metal 7, imbedded therein, covering and obstructing access to said openings 4 in said first plate 3; said p ate being rendered foraminousby a plura ity of openings 8 and the cast metal extending through said openings in unitary relation with thecastmetal upon opposite sides thereof. I find it convenient torigidly connect said imbedded-plates and 7 vbefore imbedding them in tliecast `metal, and preferably independently 4of said cast metal. Such .connectin means may conveniently include screw bo ts 10 in threaded engagement with said lates.,

It may e observed that Whereas, in Fig. I, the imbeddedplate 8 entends to edges of the slab inA which .vitis..ilmbedded; onthe contrary, in Fig. IIntlie imbedded plates 8 and 7 do not exten gto theedges of the slab. Said form shovvnjn Fig. Ilis advantageous in 4that the slab is p'r'otec ed from penetration at' its edges by the imbedded .refractory late; but the latter is visible at the led esof t e slab. On the otherhand, the form s own aslabof "cast steel 2 having Fili in Fig. II is advantageous in that the imbedded refractory plate is covered and concealed at its edges; but the edges of said slab shown in Fig. II are consequently more susceptible to attack, although said refractory plates 3 and 7 may also be drill proof. However, both forms are advantageous in that there is no indication upon either of the opposite plane faces of the slabs that there is any protective element included therein.

Such Wall members asshown in Figs. I and II'may be so shaped that they may be fitted together in any convenient manner to form an inclosure or an inclosure door. However, in Fig. III, I have shown a form of my invention especially adapted to form a vault door. In said ligure; the slab 11 is conveniently formed of cast steel having imbedded therein the plate 12, of more refractory metal, lwhich is not ydrill proof, lbut which incloses a drill' proof plate 13 which may be a self-hardening alloy. That oomposite plate 12, 13 has a plurality of openings 1-l through which said cast meta-l 11 extends in unitary relation with the cast metal upon opposite sides of said imbedded plates. Access to such openings 14 may be obstructed by similar composite plates 15, inclosing drill proof elements 17. I prefer to employ screw means 1G to rigidly connect said embedded plates 12 andJ 15, independently of said cast metal 11, to facilitate the casting operation.

Saiddoor slab 11 may be circular and have a series of conical zones 18 fitting corres ending recesses 19 in the vault wall 2 0. In tliat case; I have found it convenient to finish the edge of said door slab by turning operations, leaving the edge of the imbedded refractory metal plate 12 exposed. However, in the form of my invention shown in Fig. IV; the cast metal 21 of the slab covers the edge of the imbedded refractory metal plate 22 and access to the edge of the latter is obstructed by a circular conical band 23 of hardened steel. Moreover. as shown in Fig. IV; a drill yresisting member 24 may cover the opening 25 in' said refractory plate 22 at the inner side ,of the latter.

Said wall 2() ma have a ring of refractory metal 27 inib'e ded therein, entirely 'surrounding the door opening, and between-irnbedded masses of drill' resisting material 28 and 29.

Of course, such a door as above described may he hinged and removably securedv in any convenient. manner.l Hoii'ever, I find it desirable to employ a circular` series of radially reciprocatory bolts 30 which are mounted to slide 'in alined. bearings in the concentric rings and 33 whicli'are cast in unitar relation with the door slab l2. l I have indicated in said Fig. yIII the usual vestibule appurtenances of such `a vault structure which, however, need not be described as they are not essential elements of my present invention.

Although a vault inclosure may be formed of slabs embodying my invention connected in any convenient manner; I find it desira ble to overlap and interlockI them at their edges and to cover the joints between them by plates bolted thereto within the vault; in the manner described,- at length and claimed in my co-pending application Serial No. 673,- 48,3 filed November 8, 1923, for Letters Patent of l the United StatesI for improvement in vaults.

Therefore, I do not desire to limit myself to the precise details of construction and arrangement herein 'set forth, as it is obvious that various m'odications 'may be made therein without departing from the essential features of my invention, as defined in 'the appended claims.

claim:

1. A vault Wall member, com slab of cast steel, having, imbedde therein, a plate ofmore refractory metal, having a higher melting point than ,ordina steel, said plate being foraminous, and lthe cast metal extending through openings in saidl refractory metal plate and in unitary relation with the cast metal u on opposite sides of said plate; means including another plate, of refractory metal, imbedded in said slab, covering and obstructing access to an o ening in said first plate; and screw means rigidly connecting said imbedded plates, independently of said cast metal.

2. A vault Wall member, com rising a slab of cast steel, having, imbedded therein, a plate of more refractory metal, having a hi her melting point than ordinary steel, said plate being foraminous, and the cast metal extending through openings in said refractory metal plate and in unitary relation with the cast metal upon opposite sides of said late; means, including another plate, imbed ed`in said slab, coverinei and obstructing access to an opening in said first plate; and means rigidly connecting said imbeddd plates, independently of said cast nieta 3. A vault Wall member, comprising a slab'metal having, imbedded therein, a plate of more refractory metal; having a hi her melting point than ordinary stel,' saidp ate being forarninous, and the'cast metal extend# ing 'throughl openings inI said refractory metial'platle and in uniary relation with t-he cast metal .upon'oppsi lsides of said plate; means, imbedded'in saidl slab, covering and obstructing access to an lopening in said plate; and means rigidly connecting said imbedded members, independently of said castim'etal.

4. A va'nlt wall member, com rising` a slab. of cast metal, having,i'mbedde therein, a' 'plate of Inore'refractory metal, having a rising a llO higher melting point than ordinary steel, said plate being foraminous, and the cast metal extending through openings in said refractory metal plate and in unitary relation with the cast metal u on op osite sides of said plate; means, im eddedp in said slab, covering and obstructing access to an opening in said plate; and means rigidly oonnecting said imbedded members, independently of said cast metal.

In testimony whereof, I have Ltreunto signed my name at Philadel his, Pennsylvania, this twent -fifth da o October 1923.

1 NTHO Y KENNEbY. 

